Question

WILL GIVE MEDAL:

A website that sells songs for downloading increased its price per song from $0.99 to $1.29. Ariana spent $15.36 downloading songs before and after the price increase. She downloaded 4 more songs at $0.99 than at $1.29. The set of equations below represents the situation where x is the number of songs Ariana downloaded at $0.99 and y is the number of songs she downloaded at $1.29.

x = y + 4
.99x + 1.29y = 15.36

What is the exact number of songs Ariana downloaded at the $0.99 price?

Answer 1

@jdoe0001 @ganeshie8 please help... I'm desperate

Answer 2

so.. if you were to solve say \(\bf x = y + 4\) for "y"... what would that give you?

Answer 3

4x = y ?

Answer 4

hmm you may want to brush up your linear equation simplification

Answer 5

@jdoe0001 could you help me with how to solve x= y + 4

Answer 6

@jdoe0001

Answer 7

can you please help me i need to turn this in today

Answer 8

well... anyone writing it down, so you can transcribe it over, isn't going to "help" you though

you need to do linear simplification on that, then substitute on the 2nd equation and then simplify the combined equation

so.... you need to brush up your linear simplification bit firstly -> http://www.youtube.com/watch?v=n3FbQGGKVfc

Answer 9

@jdoe0001 does y = 8

Answer 10

@jdoe0001 are you still going to help me??

Answer 11

well.... I think you were helped already..... you need to cover the linear simplication section first

Answer 12

as I said... anyone just writing it down so you can "transcribe it" over, is not really "help

Answer 13

i watched the video you linked, and as a final result for the x=y+4 equation i got y=8

Answer 14

@jdoe0001